New to the forum but am looking for some advice, info, suggestions etc for our trip were are planning.

4 of us will be flying over around the 20th dec from Australia and returning at the end of jan. The plan is to fly into la and hire a car drive up the coast to San Fran, then head over to Tahoe for a White Christmas then through salt lake up to Jackson hole, down to the mountains in Colorado then cut down to the Grand Canyon, Vegas and spend a few days on the coast to finish.

Will most likely wing the majority of the trip but are keen to lock down a White Christmas and somewhere for the new year. To get this, should we look at rerouting the trip? Also what should we expect driving to these places, I know that the conditions often lead to road closures etc.